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	<title>说明</title>
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    body{
    	width: 100%;
    	min-height: 500px;
    	background: url(image/info_bg.jpg);
    	background-size:100% 100%;
    	background-repeat: no-repeat;
    	opacity: 0.8;
    	padding-top: 150px;
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<h3>本系统采用前后端分离架构模式，ajax交互;</h3
	><h3>后台采用三大框架SSH技术</h3></center>

</body>
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